Arc System Works performed a miracle here. The game uses a "shader trick" to mimic the 2D anime look. On the Switch, they had to downgrade the lighting engine slightly. The shadows are simpler, and the lighting isn't as dynamic as the PS4 version.
If you own the legitimate cartridge or eShop license, you can create your own "better" copy using homebrew tools.
When users search for "better NSP," they are usually confused by the multiple versions available online. Here is the breakdown of which version you should actually play. dragon ball fighterz nsp better
The "better" experience includes all characters. Instead of shady individual NSPs:
Warning: Launching online with DLC you didn't pay for = high ban risk. Use a clean emuNAND for offline DLC play. Arc System Works performed a miracle here
While the technical benefits of NSP files are clear, it is necessary to address the context in which this format is typically discussed.
Since you cannot just ask for links in standard forums, you need to know the Scene Naming Convention. When looking for the file, look for these identifiers in the title: Warning: Launching online with DLC you didn't pay
Dragon.Ball.FighterZ.[Update.v1.32].[DLC.UNLOCKER].[NSP].[NSW].[Rev2]